<http://schema.org/description>
"September 4, 2008 A &lt;a href=\"http://en.wikipedia.org/wiki/Hallucination\" target=\"_blank\"&gt;hallucination&lt;/a&gt; is a perception in a conscious awake state, in the absence of external stimuli, that has qualities of real perception in that they are vivid, substantial, and located in external objective spac"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/experimental-study-of-hallucinations-as-they-occur/9936/>